The preliminary examination of the man accused of bludgeoning his girlfriend to death in Ypsilanti was adjourned while his mental competency is examined.

Dominic Oyerinde, 20, faces four felony charges in relation to the death of his girlfriend, 17-year-old Ann Arbor resident Anna List, who died as a result of her injuries last week. He is charged with open murder, assault to commit great bodily harm, assault with a dangerous weapon and larceny of a vehicle.

At his preliminary exam this afternoon, Oyerinde’s public defense attorney Timothy Niemann, put forth two motions asking for a psychiatric evaluation of his client. The first would determine Oyerinde’s competency to stand trial and the second to determine his criminal responsibility.

Judge Richard Conlin approved the motions after some debate, and scheduled a new preliminary exam on March 31.

Eric Gutenberg, the prosecuting attorney, said he had received notice of the motions, but asked what grounds the request was based on.

“I am not privy to any information that may support the defendant’s motion,” Gutenberg said.

Niemann said he had reviewed the evidence against Oyerinde, interviewed his client and looked into his history to reach his determination. He said he made the motion “given the nature of the charges.”

List was found unconscious in the early morning hours of Jan. 13 near Recreation Park on Congress Street. She had been in a coma and hospitalized since, until she died last week. An autopsy confirmed her death was a result of a blow to her head.

Police said witnesses had heard the couple fighting at a house down the street from the park. They had traced footsteps in the snow to the house, where List’s van was found missing. Oyerinde was apprehended by Detroit Police later that day in the same van.

Conlin approved the prosecution’s motion to continue the subpoenas issued to witnesses in the case.